thanks for the feedback, I think I will start by trying the Perrin dampener next.
I just ditched the high profile 245/50/17 tires for a new set of 225/45/17s. These improve turn in quite a but, but the speedometer error is about 7% low and the wheel gap is now huge. Is there any other concerns with such a large reduction in diameter from the stock OEM size tires, 225/55/17?
The car is on 17x7+55 2008 OEM WRX wheels with 12 mm hub centric front spacers.
Apparently, the fenders were rolled to accommodate 255/45/18 tires on 18x8+45 wheels (+12 front spacers) with minor rubbing, flares were trimmed to fit over the rolled fenders.
I was thinking of perhaps upsizing the wheels to 18" to better match the OEM overall diameter, sized something similar to what is shown in this tire size comparison. That way I could put winter tires on these 17s.
Which stock or stock looking wheels and offset would work with the suspension mods on this car? Keeping 5x100.